62 UNITED STATES NATIONAL MUSEUM BULLETIN 251 



In addition to the above-mentioned zooids, many small pieces less 

 than 1.5 mm. in length and orange red (fig. 19d) are found abundantly 

 embedded in the basal part of the colony ; probably these are pieces of 

 postabdomen in strobilization. 



Remarks. — The existence of many stigmatal rows, large atrial lan- 

 guet, and probably of long postabdomen shows that the present speci- 

 men belongs to a form of the family Polyclinidae, although further 

 generic or specific identification is quite impossible. 



Family Didemnidae 



19. Didemnum (Didemnum) candidum Savigny 



FiGUKES 20a-c 



Didemnum candidum Savigny, 1816, pp. 14, 194, pi. 4, fig. 3 ; pi. 20 fig. 1. — 

 Michaelsen, 1919, p. 18.— Van Name, 1921, p. 323, figs. 16-25.— Van Name, 

 1930, p. 435, figs. 13-14.— Hastings, 1931, p. 94, fig. 13; pi. 2, fig. A.— Van 

 Name, 1945, p. 83, fig. 35 ; pi. 13, fig. 4.— Tokioka. 19Ma, p. 246, pi. 22, figs. 4-6 ; 

 pi. 23, figs. 1-7.— Tokioka 1955b, p. 45, fig. 1 ; pi. 2, figs. 10-17. 



IDidemniim recnrvatum Sluiter, 1909, p. 51, pi. 3, figs. 19-20. 



MATERIAL EXAMINED 



Philippine Islands: Cebu, Talisay; H. C. Kellers, Eclipse Expedition, April 

 17, 1929, 6 small colonies (USNM 11746), and 50 minute specimens attached to 

 carapace and legs of decorator crab (USNM 11745). — Basilan Island, Tundun 

 Pasil, near lighthouse at Isabela Channel; W. R. Taylor, January 1941, one 

 colony (USNM 11682).— Manicaan, 3 fathoms; W. R. Taylor, January 1941, one 

 colony (USNM 11644). — Baliwasan ; W. R. Taylor, sta. 10, several colonies 

 (USNM 11652).— Cabaluay, near mouth of Cabaluay River ; W. R. Taylor, sta. 14, 

 three colonies (USNM 11670).— Punta Natangol, Basilan Island; W. R. Taylor, 

 sta. 31, four colonies (USNM 11665). — Kilay Island, near Langos Island; W. R. 

 Taylor, sta. 38, three colonies (USNM 11679).— Balukbulnk Island ; W. R. Taylor, 

 sta. 40, three colonies (USNM 11635).— Boboh, near Matanal Point ; W. R. Taylor, 

 sta. 41, one colony (USNIM 11675). 



Palau Islands : Barrier reef 8 mi. NW. of Koror Island ; GVF sta. 25, six 

 colonies (USNM 11383).— Iwayama Bay, south end of Island XX ; GVF sta. 134, 

 10 colonies (USNM 11460). — Iwayama Bay, east side of Oyster Pass; GVF sta. 

 220A, two colonies (USNM 11453). — Fringing reef of small island in Eil Malk 

 Lagoon ; GVF sta. 252, one large colony encrusting Polycarpa cryptocarpa 

 ( Sluiter) (USNM 11433) and one other colony ( USNM 11432) . 



Gilbert Islands: Onotoa Atoll; A. H. Banner, sta. B-4, 4 colonies (USNM 

 11515) ; P. E. Cloud, sta. GOC-55, 22 colonies (USNM 11498) and 1 colony (USNM 

 11520) ; P. B. Cloud, sta. GOC-59, many colonies encru.sting reef corals (USNM 

 11514). 



Hawaiian Islands: Pearl and Hermes Reef; P. S. GaltsofF, sta. T. H. 60, 

 August 8, 19.30, many colonies (USNM 11765) . 



Galapagos Islands : Albemarle Island, Cartage Bay ; Hancock Galapagos 

 Exped. .'<ta. 189, collectors Bob Irwin and 11. W. Manter, January 22, 19.34, one 

 colony from carapace of Dromidia larrahurcl Katlibun with carapace length 

 15 mm. (Crust, cat. no. 69241) (USNM 117,*^^,). 



Descrii'tion. — Many large and small colonies from the Philippine, 

 Gilbert, Palau, and Hawaiian Islands, and a single colony from the 



